Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Stock and recruitment: generalizations about maximum reproductive rate, density dependence, and variability using meta-analytic approaches
Autore:
Myers, RA;
Indirizzi:
Dalhousie Univ, Dept Biol, Killam Chair Ocean Studies, Halifax, NS B3H 4J1, Canada Dalhousie Univ Halifax NS Canada B3H 4J1 ies, Halifax, NS B3H 4J1, Canada
Titolo Testata:
ICES JOURNAL OF MARINE SCIENCE
fascicolo: 5, volume: 58, anno: 2001,
pagine: 937 - 951
SICI:
1054-3139(200110)58:5<937:SARGAM>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
SALMON ONCORHYNCHUS-NERKA; MARINE DEMERSAL FISH; ATLANTIC COD; GADUS-MORHUA; NATURAL MORTALITY; BAYESIAN-APPROACH; NORTH-ATLANTIC; SPATIAL SCALES; FRASER-RIVER; POPULATION;
Keywords:
compensation; critical-period hypothesis; density-dependent mortality; recruitment; stock-recruitment; variability;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
62
Recensione:
Indirizzi per estratti:
Indirizzo: Myers, RA Dalhousie Univ, Dept Biol, Killam Chair Ocean Studies, Halifax, NS B3H 4J1, Canada Dalhousie Univ Halifax NS Canada B3H 4J1 ax, NS B3H 4J1, Canada
Citazione:
R.A. Myers, "Stock and recruitment: generalizations about maximum reproductive rate, density dependence, and variability using meta-analytic approaches", ICES J MAR, 58(5), 2001, pp. 937-951

Abstract

I describe the development and application of meta-analytic techniques to understand population dynamics. These methods have been applied to a compilation of over 700 populations of fish. which includes multivariate time-series of egg production, population size, natural mortality, and anthropogenic mortality. The key requirements of this approach are to make all units comparable and to make all model parameters random variables that describe the variation among populations. Parameters are then estimated using hierarchical Bayesian or classical mixed models. This approach allows patterns to be determined that are not detected otherwise. For example, the maximum annual reproductive rate is relatively constant for all species examined: between I and 7 replacement spawners are produced per spawner per year at low population size. Using these approaches. I also show a 20-fold variation in carrying capacity per unit area for cod. and a decrease in carrying capacitywith temperature. Recruitment variability generally increases at low population sizes. for species with higher fecundity, for populations at the edgeof their range, and in regions with less oceanographic stability. The spatial scale of recruitment correlations for marine species is approximately 500 km, compared with less than 50 km for freshwater species; anadromous species fall between these two scales. Recruitment variability generally decreases with age for marine demersal fish, but often increases with age for some salmonids.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 22:56:34